If you’re experienced as you are, you’re not learning the same way a junior assigned this might learn from it.
I also used Codex and asked questions about how the codebase worked to refresh my own memory. Why wouldn’t a junior developer do the same?
I mentioned that I had Codex describe in detail how it debugged it. It walked through each query it did, the lines of code it looked at and the IAC. It jogged my memory about code I wrote a year ago and after being on other projects
Just because it worked this time doesn’t mean it always will.
If you need further explanation of why you might want to spend more time resolving a bug to learn about the systems you’re tasked with maintaining then I’m at a loss sorry.
But he was doing this for education, not for work.
That's why he should spend 6 hours on it, and not give up and run to the gym. That's like saying "I shouldn't spend an hour at the gym this week, lifting weights is hard and I want to watch TV. I'll just get my forklift to lift the weights for me!"